A digital multimeter (DMM) is an electronic instrument used for electrical measurement. It can have many special functions like math function and temperature, but the main function is to measure electrical parameters such as voltage, current, resistance and continuity.

ㆍFor the quick check and analysis of Spectral Characteristic ㆍEMC pretest ㆍAnalysis and test of characteristics various signals ㆍTest systems that requires a very compact instrument ㆍMeasure the frequency response of cable, attenuator, filter and amplifier

Crest factor (CF) is defined as the ratio of the peak amplitude of a waveform to its RMS value.

The definition of power quality - is the deviation of voltage, current, or frequency that lead to electric equipment’s breakdown or abnormal work.

A stopwatch is a time measuring device that’s commonly used in our everyday life, usually, it is divided into three types - digital, mechanical and electrical.

In electronic testing, we always need to test the resistance characteristic and transmission characteristics of the electric circuit. Transmission characteristic includes gain and attenuation, amplitude-frequency characteristic, phase-frequency characteristic, etc.